stub of face remains after chamfer

mark_nahabedian

My document is:

https://cad.onshape.com/documents/87c734434a3d09a1007f9322/w/822165c65a73fcefc6d8feb9/e/9348590c7426d04057421259

In the "stop nut" part studio, I needed to add the fill "notch

base" so that I would have a face to do an extrude/solid/remove

for the index notch on one corner of the pentagon.

After I created "chamfer for base overextrusion" (FDM 3d printers

tend to overextrude the first layer), part of that fill

surface that I think should have been removed with the chamfer

still remain.  Why wasn't it removed?  How do I get rid of it?

Thanks.

NeilCooke

Hide or right click and select "Delete Part"

mark_nahabedian

Thanks again Neil.  That did the trick.

I guess I'm confused about the distinction between faces, surfaces and fills.

Does the OnShape documentation include a glossary of terms where I could look things up?  I've seen concept overviews but they don't necessarily present concepts in the order I need to know them and my goal driven approach to my use of OnShape hasn't exposed me to those concepts as I encounter them.

NeilCooke

Basically, a solid has volume, a surface does not. A face can belong to a solid or a surface - a solid is a collection of fully enclosed faces that create a volume and a surface is a collection of connected faces that have no volume. Did I just complicate things even further?

In most cases, you don't need to use surfaces to get the shape you want, it can be all done in solids. A fill is a surface, btw.

owen_sparks

@mark_nahabedian

Some unsolicited advice from someone who started where you are now.

(1) Ignore surfaces and fills for now.  Concentrate on the basics first.  Parametric CAD's most common workflow is sketch, then use that sketch in an extrude, revolve or sweep feature to make a solid part.

(2) Use the built in tools where appropriate.  Chamfer, fillet, holes.

(3) Play with the parametric nature a bit more, move things up and down in the feature tree, see what effect that has.  Change dimensions and let stuff rebuild.  Does it do what you intended?  (See "Design Intent")

Once you have a grasp on that then look into surface modelling, and direct editing.  However unless you're designing anything curvy and organic the first three steps above can design most things.

Cheers,

Owen S.